Mitsubishi Electric MELSEC iQ-R RD78G4 User Manual page 160

Synchronous control system control data
Setting item Setting details
[Cd.380] • Synchronous control begins if the target axis
Synchronous bit is turned ON.
control start • Synchronous control ends if the bit is turned
OFF during synchronous control.
Fetch cycle: Operation cycle
[Cd.381] • Synchronous control begins if the target axis
Synchronous bit is turned ON.
control Fetch cycle: At operation start (Synchronous
analysis mode control)
*1 When the synchronous control analysis mode is executed simultaneously or the synchronous control analysis mode and the
synchronous control start are executed simultaneously for multiple axes, perform the setting for the synchronous control start in batches
for each word. If the axes are set continuously in bits, the synchronous control analysis mode and the synchronous control start may not
operate depending on the timing.
*2 The range from axis 1 to 4 is valid in the 4-axis module, from axis 1 to 8 is valid in the 8-axis module, and from axis 1 to 16 is valid in the
16-axis module.
Example
The following shows a procedure of aligning the synchronous position of an output axis that references the input axis.
1.
Set the following values in the synchronous control initial position parameters.
Setting item
[Pr.460] Setting method of position value per cycle after main shaft gear
[Pr.462] Cam axis position restoration object
[Pr.463] Setting method of cam reference position
[Pr.464] Setting method of cam axis position value per cycle
2.
Turn ON the target axis bit of "[Cd.381] Synchronous control analysis mode", and then turn the target axis bit from OFF
to ON in "[Cd.380] Synchronous control start" to start the synchronous control analysis mode.
3.
Verify the target axis bit is OFF for "[Cd.380] Synchronous control start", and execute positioning for the output axis to be
updated to "[Md.409] Cam axis command position value".
4.
Turn OFF the target axis bit of "[Cd.381] Synchronous control analysis mode", and then turn the target axis bit from OFF
to ON in "[Cd.380] Synchronous control start" to start synchronous control.
5 ADVANCED SYNCHRONOUS CONTROL INITIAL POSITION
158
5.4 Synchronous Control Analysis Mode
Setting value
*1
■Set the target axis in bit.
Set with the following buffer memory addresses.
• Buffer memory address: 36320
*2
(bit0: axis 1 to bit15: axes 16 )
Buffer memory address: 36320
b15 b12 b4
b8
Axis 1 to 16
OFF: Synchronous control end
ON: Synchronous control start
■Set the target axis in bit.
Set with the following buffer memory addresses.
• Buffer memory address: 36322
*2
(bit0: axis 1 to bit15: axes 16 )
Buffer memory address: 36322
b15 b12 b8 b4
Axis 1 to 16
OFF: Synchronous control analysis mode OFF
ON: Synchronous control analysis mode ON
Setting value
2: Calculate from input axis
2: Cam axis command position value restoration
0: Previous value
2: Position value per cycle after main shaft gear
Default Buffer memory address
value
Axis 1 to axis 16
0 36320
b0
0 36322
b0